./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 01:50:35,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:50:35,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:50:35,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:50:35,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:50:35,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:50:35,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:50:35,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:50:35,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:50:35,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:50:35,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:50:35,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:50:35,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:50:35,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:50:35,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:50:35,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:50:35,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:50:35,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:50:35,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:50:35,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:50:35,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:50:35,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:50:35,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:50:35,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:50:35,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:50:35,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:50:35,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:50:35,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:50:35,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:50:35,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:50:35,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:50:35,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:50:35,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:50:35,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:50:35,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:50:35,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:50:35,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:50:35,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:50:35,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:50:35,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:50:35,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:50:35,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:50:35,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:50:35,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:50:35,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:50:35,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:50:35,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:50:35,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:50:35,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:50:35,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:50:35,369 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:50:35,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:50:35,370 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:50:35,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:50:35,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:50:35,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:50:35,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:50:35,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:50:35,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:50:35,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:50:35,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:50:35,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:50:35,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:50:35,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:50:35,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:50:35,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:50:35,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:50:35,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:50:35,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:50:35,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:50:35,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:50:35,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:50:35,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:50:35,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:50:35,376 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:50:35,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:50:35,376 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f [2022-11-23 01:50:35,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:50:35,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:50:35,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:50:35,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:50:35,693 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:50:35,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-11-23 01:50:38,651 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:50:38,902 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:50:38,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-11-23 01:50:38,917 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/data/cfe584264/c0dc7e569f184ffe9a906f04266a9b7d/FLAGd20d34dfe [2022-11-23 01:50:38,932 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/data/cfe584264/c0dc7e569f184ffe9a906f04266a9b7d [2022-11-23 01:50:38,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:50:38,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:50:38,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:50:38,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:50:38,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:50:38,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:38" (1/1) ... [2022-11-23 01:50:38,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfecea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:38, skipping insertion in model container [2022-11-23 01:50:38,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:50:38" (1/1) ... [2022-11-23 01:50:38,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:50:39,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:50:39,183 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-11-23 01:50:39,286 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-11-23 01:50:39,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:50:39,458 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:50:39,472 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2022-11-23 01:50:39,513 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2022-11-23 01:50:39,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:50:39,616 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:50:39,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39 WrapperNode [2022-11-23 01:50:39,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:50:39,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:50:39,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:50:39,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:50:39,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,690 INFO L138 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 929 [2022-11-23 01:50:39,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:50:39,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:50:39,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:50:39,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:50:39,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:50:39,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:50:39,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:50:39,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:50:39,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (1/1) ... [2022-11-23 01:50:39,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:50:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:50:39,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:50:39,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:50:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:50:39,846 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-23 01:50:39,846 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-23 01:50:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-23 01:50:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-23 01:50:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-23 01:50:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-23 01:50:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-23 01:50:39,849 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-23 01:50:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-23 01:50:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-23 01:50:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-23 01:50:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-23 01:50:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-23 01:50:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-23 01:50:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-23 01:50:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-23 01:50:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-23 01:50:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-23 01:50:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-23 01:50:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-23 01:50:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-23 01:50:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-23 01:50:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:50:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-23 01:50:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-23 01:50:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-23 01:50:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-23 01:50:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:50:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:50:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-23 01:50:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-23 01:50:39,855 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-23 01:50:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-23 01:50:39,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:50:39,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:50:41,104 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:50:41,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:50:41,130 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-23 01:50:41,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:41 BoogieIcfgContainer [2022-11-23 01:50:41,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:50:41,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:50:41,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:50:41,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:50:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:50:38" (1/3) ... [2022-11-23 01:50:41,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a7b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:41, skipping insertion in model container [2022-11-23 01:50:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:50:39" (2/3) ... [2022-11-23 01:50:41,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a7b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:50:41, skipping insertion in model container [2022-11-23 01:50:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:50:41" (3/3) ... [2022-11-23 01:50:41,141 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2022-11-23 01:50:41,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:50:41,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 01:50:41,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:50:41,275 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a5a7e4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:50:41,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 01:50:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-23 01:50:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:41,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:41,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:41,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1192357691, now seen corresponding path program 1 times [2022-11-23 01:50:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:41,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893499833] [2022-11-23 01:50:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:41,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893499833] [2022-11-23 01:50:41,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893499833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:41,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:41,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:50:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694679642] [2022-11-23 01:50:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:41,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:50:41,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:50:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:50:41,938 INFO L87 Difference]: Start difference. First operand has 441 states, 383 states have (on average 1.6370757180156659) internal successors, (627), 391 states have internal predecessors, (627), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:43,514 INFO L93 Difference]: Finished difference Result 990 states and 1576 transitions. [2022-11-23 01:50:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:50:43,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-23 01:50:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:43,545 INFO L225 Difference]: With dead ends: 990 [2022-11-23 01:50:43,546 INFO L226 Difference]: Without dead ends: 565 [2022-11-23 01:50:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:50:43,559 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1096 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:43,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 2018 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 01:50:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-23 01:50:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-11-23 01:50:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 451 states have (on average 1.5210643015521064) internal successors, (686), 458 states have internal predecessors, (686), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-23 01:50:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 789 transitions. [2022-11-23 01:50:43,674 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 789 transitions. Word has length 65 [2022-11-23 01:50:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:43,679 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 789 transitions. [2022-11-23 01:50:43,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 789 transitions. [2022-11-23 01:50:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:43,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:43,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:50:43,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:43,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash -929120350, now seen corresponding path program 1 times [2022-11-23 01:50:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:43,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125301936] [2022-11-23 01:50:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:43,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:43,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125301936] [2022-11-23 01:50:43,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125301936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:43,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:43,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:50:43,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998230906] [2022-11-23 01:50:43,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:50:43,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:50:43,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:50:43,965 INFO L87 Difference]: Start difference. First operand 526 states and 789 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:45,396 INFO L93 Difference]: Finished difference Result 873 states and 1266 transitions. [2022-11-23 01:50:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:50:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-23 01:50:45,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:45,404 INFO L225 Difference]: With dead ends: 873 [2022-11-23 01:50:45,404 INFO L226 Difference]: Without dead ends: 696 [2022-11-23 01:50:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:50:45,408 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 1626 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 1840 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 01:50:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-11-23 01:50:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 622. [2022-11-23 01:50:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 527 states have (on average 1.4990512333965844) internal successors, (790), 536 states have internal predecessors, (790), 62 states have call successors, (62), 29 states have call predecessors, (62), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2022-11-23 01:50:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 923 transitions. [2022-11-23 01:50:45,512 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 923 transitions. Word has length 65 [2022-11-23 01:50:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:45,513 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 923 transitions. [2022-11-23 01:50:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 923 transitions. [2022-11-23 01:50:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:45,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:45,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:50:45,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1337260836, now seen corresponding path program 1 times [2022-11-23 01:50:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:45,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141133995] [2022-11-23 01:50:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:45,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:45,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141133995] [2022-11-23 01:50:45,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141133995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:45,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:45,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:50:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050431091] [2022-11-23 01:50:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:50:45,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:50:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:50:45,825 INFO L87 Difference]: Start difference. First operand 622 states and 923 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:47,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:47,277 INFO L93 Difference]: Finished difference Result 923 states and 1337 transitions. [2022-11-23 01:50:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:50:47,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-23 01:50:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:47,284 INFO L225 Difference]: With dead ends: 923 [2022-11-23 01:50:47,284 INFO L226 Difference]: Without dead ends: 656 [2022-11-23 01:50:47,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:50:47,295 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 858 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:47,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2315 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 01:50:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-23 01:50:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 627. [2022-11-23 01:50:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 531 states have (on average 1.4915254237288136) internal successors, (792), 540 states have internal predecessors, (792), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2022-11-23 01:50:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2022-11-23 01:50:47,354 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 65 [2022-11-23 01:50:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:47,354 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2022-11-23 01:50:47,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2022-11-23 01:50:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:47,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:47,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:47,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:50:47,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:47,359 INFO L85 PathProgramCache]: Analyzing trace with hash 307901538, now seen corresponding path program 1 times [2022-11-23 01:50:47,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:47,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759106707] [2022-11-23 01:50:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:47,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:47,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759106707] [2022-11-23 01:50:47,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759106707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:47,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:47,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:50:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140929927] [2022-11-23 01:50:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:47,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:50:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:50:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:50:47,562 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:48,951 INFO L93 Difference]: Finished difference Result 945 states and 1359 transitions. [2022-11-23 01:50:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:50:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-23 01:50:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:48,956 INFO L225 Difference]: With dead ends: 945 [2022-11-23 01:50:48,956 INFO L226 Difference]: Without dead ends: 673 [2022-11-23 01:50:48,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:50:48,958 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 861 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:48,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2313 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 01:50:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-23 01:50:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 642. [2022-11-23 01:50:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 543 states have (on average 1.4806629834254144) internal successors, (804), 552 states have internal predecessors, (804), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2022-11-23 01:50:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 941 transitions. [2022-11-23 01:50:49,003 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 941 transitions. Word has length 65 [2022-11-23 01:50:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:49,004 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 941 transitions. [2022-11-23 01:50:49,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 941 transitions. [2022-11-23 01:50:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:49,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:49,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:50:49,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:49,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1694104932, now seen corresponding path program 1 times [2022-11-23 01:50:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:49,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810661166] [2022-11-23 01:50:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:49,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810661166] [2022-11-23 01:50:49,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810661166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:49,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:49,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:50:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106400759] [2022-11-23 01:50:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:49,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:50:49,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:50:49,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:50:49,261 INFO L87 Difference]: Start difference. First operand 642 states and 941 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:50,691 INFO L93 Difference]: Finished difference Result 1034 states and 1452 transitions. [2022-11-23 01:50:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:50:50,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-23 01:50:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:50,696 INFO L225 Difference]: With dead ends: 1034 [2022-11-23 01:50:50,696 INFO L226 Difference]: Without dead ends: 749 [2022-11-23 01:50:50,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:50:50,698 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1292 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:50,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1960 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 01:50:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-23 01:50:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 654. [2022-11-23 01:50:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 553 states have (on average 1.4719710669077757) internal successors, (814), 562 states have internal predecessors, (814), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2022-11-23 01:50:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 951 transitions. [2022-11-23 01:50:50,754 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 951 transitions. Word has length 65 [2022-11-23 01:50:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:50,755 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 951 transitions. [2022-11-23 01:50:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 951 transitions. [2022-11-23 01:50:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:50:50,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:50,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:50,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:50:50,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1560091426, now seen corresponding path program 1 times [2022-11-23 01:50:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919631708] [2022-11-23 01:50:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919631708] [2022-11-23 01:50:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919631708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:50,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:50:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072867187] [2022-11-23 01:50:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:50:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:50:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:50:50,886 INFO L87 Difference]: Start difference. First operand 654 states and 951 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:51,791 INFO L93 Difference]: Finished difference Result 1296 states and 1798 transitions. [2022-11-23 01:50:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 01:50:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-23 01:50:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:51,796 INFO L225 Difference]: With dead ends: 1296 [2022-11-23 01:50:51,796 INFO L226 Difference]: Without dead ends: 1000 [2022-11-23 01:50:51,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:50:51,798 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1587 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:51,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1303 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:50:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-11-23 01:50:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 944. [2022-11-23 01:50:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 777 states have (on average 1.416988416988417) internal successors, (1101), 793 states have internal predecessors, (1101), 98 states have call successors, (98), 52 states have call predecessors, (98), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2022-11-23 01:50:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1330 transitions. [2022-11-23 01:50:51,873 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1330 transitions. Word has length 65 [2022-11-23 01:50:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:51,873 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1330 transitions. [2022-11-23 01:50:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-23 01:50:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1330 transitions. [2022-11-23 01:50:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 01:50:51,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:51,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:50:51,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:51,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1800845042, now seen corresponding path program 1 times [2022-11-23 01:50:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:51,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011371798] [2022-11-23 01:50:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:51,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:51,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011371798] [2022-11-23 01:50:51,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011371798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:51,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:51,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:50:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009600192] [2022-11-23 01:50:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:50:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:50:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:50:51,998 INFO L87 Difference]: Start difference. First operand 944 states and 1330 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:52,952 INFO L93 Difference]: Finished difference Result 2147 states and 2901 transitions. [2022-11-23 01:50:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:50:52,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-23 01:50:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:52,962 INFO L225 Difference]: With dead ends: 2147 [2022-11-23 01:50:52,962 INFO L226 Difference]: Without dead ends: 1540 [2022-11-23 01:50:52,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:50:52,970 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 764 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:52,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1569 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:50:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-11-23 01:50:53,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1425. [2022-11-23 01:50:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1156 states have (on average 1.3685121107266436) internal successors, (1582), 1175 states have internal predecessors, (1582), 143 states have call successors, (143), 96 states have call predecessors, (143), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2022-11-23 01:50:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1928 transitions. [2022-11-23 01:50:53,069 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1928 transitions. Word has length 66 [2022-11-23 01:50:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:53,069 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 1928 transitions. [2022-11-23 01:50:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1928 transitions. [2022-11-23 01:50:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 01:50:53,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:53,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:50:53,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:53,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:53,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1035882595, now seen corresponding path program 1 times [2022-11-23 01:50:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:53,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609488119] [2022-11-23 01:50:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:53,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:53,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609488119] [2022-11-23 01:50:53,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609488119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:53,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:53,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:50:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986192330] [2022-11-23 01:50:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:50:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:50:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:50:53,211 INFO L87 Difference]: Start difference. First operand 1425 states and 1928 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:54,049 INFO L93 Difference]: Finished difference Result 3613 states and 4734 transitions. [2022-11-23 01:50:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:50:54,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-23 01:50:54,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:54,060 INFO L225 Difference]: With dead ends: 3613 [2022-11-23 01:50:54,061 INFO L226 Difference]: Without dead ends: 2545 [2022-11-23 01:50:54,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:50:54,065 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1583 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:54,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 1012 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:50:54,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-11-23 01:50:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2287. [2022-11-23 01:50:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1822 states have (on average 1.3221734357848518) internal successors, (2409), 1851 states have internal predecessors, (2409), 241 states have call successors, (241), 180 states have call predecessors, (241), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2022-11-23 01:50:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2989 transitions. [2022-11-23 01:50:54,286 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2989 transitions. Word has length 66 [2022-11-23 01:50:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:54,287 INFO L495 AbstractCegarLoop]: Abstraction has 2287 states and 2989 transitions. [2022-11-23 01:50:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2989 transitions. [2022-11-23 01:50:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 01:50:54,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:54,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:50:54,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash 283948209, now seen corresponding path program 1 times [2022-11-23 01:50:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:54,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197456619] [2022-11-23 01:50:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:54,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:54,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197456619] [2022-11-23 01:50:54,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197456619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:54,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:54,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:50:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444160177] [2022-11-23 01:50:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:54,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:50:54,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:54,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:50:54,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:50:54,383 INFO L87 Difference]: Start difference. First operand 2287 states and 2989 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:55,298 INFO L93 Difference]: Finished difference Result 5197 states and 6639 transitions. [2022-11-23 01:50:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:50:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-23 01:50:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:55,313 INFO L225 Difference]: With dead ends: 5197 [2022-11-23 01:50:55,313 INFO L226 Difference]: Without dead ends: 3267 [2022-11-23 01:50:55,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:50:55,319 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1564 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:55,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1047 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:50:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-11-23 01:50:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3019. [2022-11-23 01:50:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2390 states have (on average 1.302510460251046) internal successors, (3113), 2427 states have internal predecessors, (3113), 321 states have call successors, (321), 250 states have call predecessors, (321), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2022-11-23 01:50:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 3882 transitions. [2022-11-23 01:50:55,583 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 3882 transitions. Word has length 72 [2022-11-23 01:50:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:55,584 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 3882 transitions. [2022-11-23 01:50:55,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:50:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 3882 transitions. [2022-11-23 01:50:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 01:50:55,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:55,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:55,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:50:55,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -304350912, now seen corresponding path program 1 times [2022-11-23 01:50:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:55,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034333739] [2022-11-23 01:50:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:55,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034333739] [2022-11-23 01:50:55,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034333739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:55,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:55,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:50:55,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291571000] [2022-11-23 01:50:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:55,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:50:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:50:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:50:55,699 INFO L87 Difference]: Start difference. First operand 3019 states and 3882 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 01:50:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:56,830 INFO L93 Difference]: Finished difference Result 3793 states and 4813 transitions. [2022-11-23 01:50:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:50:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-23 01:50:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:56,845 INFO L225 Difference]: With dead ends: 3793 [2022-11-23 01:50:56,846 INFO L226 Difference]: Without dead ends: 3790 [2022-11-23 01:50:56,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:50:56,848 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1892 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:56,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 1327 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:50:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-11-23 01:50:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3513. [2022-11-23 01:50:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 2775 states have (on average 1.2918918918918918) internal successors, (3585), 2817 states have internal predecessors, (3585), 371 states have call successors, (371), 294 states have call predecessors, (371), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2022-11-23 01:50:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4483 transitions. [2022-11-23 01:50:57,162 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4483 transitions. Word has length 73 [2022-11-23 01:50:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:57,162 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4483 transitions. [2022-11-23 01:50:57,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 01:50:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4483 transitions. [2022-11-23 01:50:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 01:50:57,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:57,166 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:50:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:50:57,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash -846258469, now seen corresponding path program 1 times [2022-11-23 01:50:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:57,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140695958] [2022-11-23 01:50:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:50:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:50:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:50:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:50:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:50:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:50:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:50:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:57,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140695958] [2022-11-23 01:50:57,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140695958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:50:57,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819103877] [2022-11-23 01:50:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:50:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:50:57,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:50:57,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:50:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:57,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 01:50:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:50:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:57,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:50:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:58,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819103877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:50:58,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:50:58,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-23 01:50:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911982350] [2022-11-23 01:50:58,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:50:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:50:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:50:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:50:58,259 INFO L87 Difference]: Start difference. First operand 3513 states and 4483 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 01:51:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:00,799 INFO L93 Difference]: Finished difference Result 7954 states and 9969 transitions. [2022-11-23 01:51:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 01:51:00,799 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-23 01:51:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:00,831 INFO L225 Difference]: With dead ends: 7954 [2022-11-23 01:51:00,831 INFO L226 Difference]: Without dead ends: 7951 [2022-11-23 01:51:00,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-11-23 01:51:00,835 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1811 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:00,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 2682 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 01:51:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7951 states. [2022-11-23 01:51:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7951 to 5303. [2022-11-23 01:51:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5303 states, 4179 states have (on average 1.2828427853553481) internal successors, (5361), 4243 states have internal predecessors, (5361), 555 states have call successors, (555), 452 states have call predecessors, (555), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2022-11-23 01:51:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5303 states to 5303 states and 6721 transitions. [2022-11-23 01:51:01,450 INFO L78 Accepts]: Start accepts. Automaton has 5303 states and 6721 transitions. Word has length 74 [2022-11-23 01:51:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:01,450 INFO L495 AbstractCegarLoop]: Abstraction has 5303 states and 6721 transitions. [2022-11-23 01:51:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 01:51:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5303 states and 6721 transitions. [2022-11-23 01:51:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 01:51:01,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:01,454 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:01,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:51:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:01,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash -931904896, now seen corresponding path program 2 times [2022-11-23 01:51:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987153146] [2022-11-23 01:51:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:01,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:01,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987153146] [2022-11-23 01:51:01,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987153146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:01,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:01,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:51:01,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980377363] [2022-11-23 01:51:01,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:01,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:51:01,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:01,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:51:01,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:51:01,755 INFO L87 Difference]: Start difference. First operand 5303 states and 6721 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 01:51:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:03,034 INFO L93 Difference]: Finished difference Result 7985 states and 10094 transitions. [2022-11-23 01:51:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:51:03,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-23 01:51:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:03,064 INFO L225 Difference]: With dead ends: 7985 [2022-11-23 01:51:03,064 INFO L226 Difference]: Without dead ends: 3910 [2022-11-23 01:51:03,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:51:03,073 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1169 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:03,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1434 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:51:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2022-11-23 01:51:03,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3675. [2022-11-23 01:51:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3675 states, 2907 states have (on average 1.2731338149294806) internal successors, (3701), 2949 states have internal predecessors, (3701), 387 states have call successors, (387), 308 states have call predecessors, (387), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2022-11-23 01:51:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4619 transitions. [2022-11-23 01:51:03,421 INFO L78 Accepts]: Start accepts. Automaton has 3675 states and 4619 transitions. Word has length 77 [2022-11-23 01:51:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:03,422 INFO L495 AbstractCegarLoop]: Abstraction has 3675 states and 4619 transitions. [2022-11-23 01:51:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 01:51:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3675 states and 4619 transitions. [2022-11-23 01:51:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 01:51:03,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:03,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:03,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 01:51:03,427 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -840062387, now seen corresponding path program 1 times [2022-11-23 01:51:03,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:03,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531921086] [2022-11-23 01:51:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:03,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:51:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 01:51:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531921086] [2022-11-23 01:51:03,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531921086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:03,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:03,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:51:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505145144] [2022-11-23 01:51:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:03,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:51:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:51:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:51:03,568 INFO L87 Difference]: Start difference. First operand 3675 states and 4619 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:51:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:05,697 INFO L93 Difference]: Finished difference Result 10547 states and 13036 transitions. [2022-11-23 01:51:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 01:51:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-23 01:51:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:05,723 INFO L225 Difference]: With dead ends: 10547 [2022-11-23 01:51:05,723 INFO L226 Difference]: Without dead ends: 5910 [2022-11-23 01:51:05,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-23 01:51:05,733 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 990 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:05,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 2041 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 01:51:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2022-11-23 01:51:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5590. [2022-11-23 01:51:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4365 states have (on average 1.2426116838487973) internal successors, (5424), 4450 states have internal predecessors, (5424), 591 states have call successors, (591), 482 states have call predecessors, (591), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2022-11-23 01:51:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 6928 transitions. [2022-11-23 01:51:06,390 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 6928 transitions. Word has length 84 [2022-11-23 01:51:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:06,391 INFO L495 AbstractCegarLoop]: Abstraction has 5590 states and 6928 transitions. [2022-11-23 01:51:06,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:51:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 6928 transitions. [2022-11-23 01:51:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 01:51:06,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:06,396 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:51:06,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:06,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 670528542, now seen corresponding path program 1 times [2022-11-23 01:51:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:06,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987559596] [2022-11-23 01:51:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 01:51:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 01:51:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:06,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987559596] [2022-11-23 01:51:06,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987559596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:06,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:06,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:51:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878611454] [2022-11-23 01:51:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:06,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:51:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:51:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:51:06,567 INFO L87 Difference]: Start difference. First operand 5590 states and 6928 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:51:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:08,578 INFO L93 Difference]: Finished difference Result 9593 states and 11768 transitions. [2022-11-23 01:51:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 01:51:08,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-23 01:51:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:08,598 INFO L225 Difference]: With dead ends: 9593 [2022-11-23 01:51:08,599 INFO L226 Difference]: Without dead ends: 5000 [2022-11-23 01:51:08,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-23 01:51:08,609 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 2216 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:08,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 1748 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 01:51:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2022-11-23 01:51:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4666. [2022-11-23 01:51:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4666 states, 3654 states have (on average 1.2378215654077722) internal successors, (4523), 3721 states have internal predecessors, (4523), 492 states have call successors, (492), 397 states have call predecessors, (492), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2022-11-23 01:51:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4666 states to 4666 states and 5706 transitions. [2022-11-23 01:51:09,114 INFO L78 Accepts]: Start accepts. Automaton has 4666 states and 5706 transitions. Word has length 93 [2022-11-23 01:51:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:09,114 INFO L495 AbstractCegarLoop]: Abstraction has 4666 states and 5706 transitions. [2022-11-23 01:51:09,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 01:51:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4666 states and 5706 transitions. [2022-11-23 01:51:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 01:51:09,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:09,122 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 01:51:09,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1155770855, now seen corresponding path program 1 times [2022-11-23 01:51:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:09,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859435196] [2022-11-23 01:51:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:51:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 01:51:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 01:51:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 01:51:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 01:51:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 01:51:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-23 01:51:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-23 01:51:09,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:09,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859435196] [2022-11-23 01:51:09,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859435196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:51:09,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721781014] [2022-11-23 01:51:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:09,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:09,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:51:09,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:51:09,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:51:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:09,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 01:51:09,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:51:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:51:09,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 01:51:09,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721781014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:09,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 01:51:09,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-23 01:51:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441588351] [2022-11-23 01:51:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:51:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:51:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:51:09,539 INFO L87 Difference]: Start difference. First operand 4666 states and 5706 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 01:51:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:09,838 INFO L93 Difference]: Finished difference Result 6832 states and 8329 transitions. [2022-11-23 01:51:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:51:09,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-11-23 01:51:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:09,857 INFO L225 Difference]: With dead ends: 6832 [2022-11-23 01:51:09,857 INFO L226 Difference]: Without dead ends: 2527 [2022-11-23 01:51:09,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:51:09,868 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 34 mSDsluCounter, 2576 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:09,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3230 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:51:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-11-23 01:51:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2402. [2022-11-23 01:51:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1967 states have (on average 1.2552109811896288) internal successors, (2469), 1983 states have internal predecessors, (2469), 216 states have call successors, (216), 163 states have call predecessors, (216), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2022-11-23 01:51:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 2983 transitions. [2022-11-23 01:51:10,071 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 2983 transitions. Word has length 145 [2022-11-23 01:51:10,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:10,071 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 2983 transitions. [2022-11-23 01:51:10,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 01:51:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 2983 transitions. [2022-11-23 01:51:10,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-23 01:51:10,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:10,078 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:10,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:51:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:10,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -707927933, now seen corresponding path program 1 times [2022-11-23 01:51:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38948463] [2022-11-23 01:51:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 01:51:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 01:51:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 01:51:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 01:51:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 01:51:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 01:51:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-23 01:51:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-23 01:51:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38948463] [2022-11-23 01:51:10,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38948463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:10,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:10,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:51:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949125790] [2022-11-23 01:51:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:51:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:51:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:51:10,406 INFO L87 Difference]: Start difference. First operand 2402 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:51:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:11,328 INFO L93 Difference]: Finished difference Result 2467 states and 3051 transitions. [2022-11-23 01:51:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:51:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-11-23 01:51:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:11,335 INFO L225 Difference]: With dead ends: 2467 [2022-11-23 01:51:11,336 INFO L226 Difference]: Without dead ends: 2024 [2022-11-23 01:51:11,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:51:11,338 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 679 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:11,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1512 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:51:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-23 01:51:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1962. [2022-11-23 01:51:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1623 states have (on average 1.2723351817621689) internal successors, (2065), 1636 states have internal predecessors, (2065), 170 states have call successors, (170), 123 states have call predecessors, (170), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2022-11-23 01:51:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2469 transitions. [2022-11-23 01:51:11,595 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2469 transitions. Word has length 147 [2022-11-23 01:51:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:11,596 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2469 transitions. [2022-11-23 01:51:11,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 01:51:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2469 transitions. [2022-11-23 01:51:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 01:51:11,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:11,602 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:11,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 01:51:11,603 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1913489485, now seen corresponding path program 1 times [2022-11-23 01:51:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:11,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476010339] [2022-11-23 01:51:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:51:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:51:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 01:51:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 01:51:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 01:51:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 01:51:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-23 01:51:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-23 01:51:11,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:11,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476010339] [2022-11-23 01:51:11,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476010339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:11,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:11,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769192991] [2022-11-23 01:51:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:11,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:11,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:11,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:11,775 INFO L87 Difference]: Start difference. First operand 1962 states and 2469 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 01:51:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:12,899 INFO L93 Difference]: Finished difference Result 3439 states and 4268 transitions. [2022-11-23 01:51:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:51:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-11-23 01:51:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:12,906 INFO L225 Difference]: With dead ends: 3439 [2022-11-23 01:51:12,906 INFO L226 Difference]: Without dead ends: 2063 [2022-11-23 01:51:12,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:51:12,910 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 604 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:12,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1992 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:51:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-11-23 01:51:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1871. [2022-11-23 01:51:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1554 states have (on average 1.274131274131274) internal successors, (1980), 1568 states have internal predecessors, (1980), 161 states have call successors, (161), 118 states have call predecessors, (161), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2022-11-23 01:51:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2359 transitions. [2022-11-23 01:51:13,077 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2359 transitions. Word has length 159 [2022-11-23 01:51:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:13,077 INFO L495 AbstractCegarLoop]: Abstraction has 1871 states and 2359 transitions. [2022-11-23 01:51:13,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 01:51:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2359 transitions. [2022-11-23 01:51:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 01:51:13,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:13,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 01:51:13,082 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1858661205, now seen corresponding path program 1 times [2022-11-23 01:51:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:13,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689253371] [2022-11-23 01:51:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:51:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-23 01:51:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:51:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 01:51:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 01:51:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 01:51:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 01:51:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 01:51:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:51:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-23 01:51:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 01:51:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-23 01:51:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 01:51:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689253371] [2022-11-23 01:51:13,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689253371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:51:13,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822386002] [2022-11-23 01:51:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:51:13,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:51:13,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:51:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:13,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 01:51:13,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:51:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-23 01:51:13,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:51:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-23 01:51:14,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822386002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:51:14,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:51:14,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-11-23 01:51:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214819795] [2022-11-23 01:51:14,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:51:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:51:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:51:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:51:14,171 INFO L87 Difference]: Start difference. First operand 1871 states and 2359 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-23 01:51:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:15,844 INFO L93 Difference]: Finished difference Result 3843 states and 4812 transitions. [2022-11-23 01:51:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 01:51:15,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-11-23 01:51:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:15,852 INFO L225 Difference]: With dead ends: 3843 [2022-11-23 01:51:15,852 INFO L226 Difference]: Without dead ends: 2411 [2022-11-23 01:51:15,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-11-23 01:51:15,856 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 2130 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:15,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 1593 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 01:51:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2022-11-23 01:51:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2261. [2022-11-23 01:51:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2461790393013101) internal successors, (2283), 1854 states have internal predecessors, (2283), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-11-23 01:51:16,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2830 transitions. [2022-11-23 01:51:16,054 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2830 transitions. Word has length 162 [2022-11-23 01:51:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:16,054 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 2830 transitions. [2022-11-23 01:51:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-23 01:51:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2830 transitions. [2022-11-23 01:51:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:16,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:16,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:16,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:51:16,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6c35ba7-ad32-4844-9e8b-e550e839f5d6/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:51:16,266 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash 451963073, now seen corresponding path program 1 times [2022-11-23 01:51:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:16,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072740076] [2022-11-23 01:51:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:16,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072740076] [2022-11-23 01:51:16,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072740076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:16,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:16,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 01:51:16,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542355228] [2022-11-23 01:51:16,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:16,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:51:16,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:16,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:51:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:51:16,431 INFO L87 Difference]: Start difference. First operand 2261 states and 2830 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:18,673 INFO L93 Difference]: Finished difference Result 2705 states and 3546 transitions. [2022-11-23 01:51:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:51:18,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:18,680 INFO L225 Difference]: With dead ends: 2705 [2022-11-23 01:51:18,680 INFO L226 Difference]: Without dead ends: 2381 [2022-11-23 01:51:18,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:51:18,683 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 996 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:18,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 905 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 01:51:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2022-11-23 01:51:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2261. [2022-11-23 01:51:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1832 states have (on average 1.2456331877729259) internal successors, (2282), 1854 states have internal predecessors, (2282), 215 states have call successors, (215), 168 states have call predecessors, (215), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-11-23 01:51:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2829 transitions. [2022-11-23 01:51:19,089 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2829 transitions. Word has length 157 [2022-11-23 01:51:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:19,090 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 2829 transitions. [2022-11-23 01:51:19,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2829 transitions. [2022-11-23 01:51:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:19,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:19,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:19,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 01:51:19,095 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1445016385, now seen corresponding path program 1 times [2022-11-23 01:51:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179603593] [2022-11-23 01:51:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179603593] [2022-11-23 01:51:19,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179603593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:19,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:19,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:51:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839566182] [2022-11-23 01:51:19,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:19,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:51:19,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:51:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:51:19,305 INFO L87 Difference]: Start difference. First operand 2261 states and 2829 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:23,055 INFO L93 Difference]: Finished difference Result 3147 states and 4260 transitions. [2022-11-23 01:51:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:51:23,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:23,065 INFO L225 Difference]: With dead ends: 3147 [2022-11-23 01:51:23,065 INFO L226 Difference]: Without dead ends: 2831 [2022-11-23 01:51:23,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:51:23,068 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1562 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:23,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1520 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 01:51:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-11-23 01:51:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2590. [2022-11-23 01:51:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2135 states have (on average 1.2955503512880562) internal successors, (2766), 2158 states have internal predecessors, (2766), 234 states have call successors, (234), 174 states have call predecessors, (234), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2022-11-23 01:51:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3354 transitions. [2022-11-23 01:51:23,485 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3354 transitions. Word has length 157 [2022-11-23 01:51:23,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:23,485 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 3354 transitions. [2022-11-23 01:51:23,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3354 transitions. [2022-11-23 01:51:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:23,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:23,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 01:51:23,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -778981189, now seen corresponding path program 1 times [2022-11-23 01:51:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:23,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462435179] [2022-11-23 01:51:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:23,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:23,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462435179] [2022-11-23 01:51:23,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462435179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:23,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:23,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:23,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446260514] [2022-11-23 01:51:23,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:23,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:23,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:23,725 INFO L87 Difference]: Start difference. First operand 2590 states and 3354 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:28,164 INFO L93 Difference]: Finished difference Result 3940 states and 5536 transitions. [2022-11-23 01:51:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:51:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:28,173 INFO L225 Difference]: With dead ends: 3940 [2022-11-23 01:51:28,174 INFO L226 Difference]: Without dead ends: 3295 [2022-11-23 01:51:28,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:51:28,177 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1585 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:28,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 2471 Invalid, 3413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 01:51:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-11-23 01:51:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2896. [2022-11-23 01:51:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2415 states have (on average 1.3267080745341615) internal successors, (3204), 2439 states have internal predecessors, (3204), 253 states have call successors, (253), 180 states have call predecessors, (253), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2022-11-23 01:51:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3832 transitions. [2022-11-23 01:51:28,653 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3832 transitions. Word has length 157 [2022-11-23 01:51:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:28,653 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 3832 transitions. [2022-11-23 01:51:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3832 transitions. [2022-11-23 01:51:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:28,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:28,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:28,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 01:51:28,659 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash 619972413, now seen corresponding path program 1 times [2022-11-23 01:51:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:28,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563144024] [2022-11-23 01:51:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:28,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563144024] [2022-11-23 01:51:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563144024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:28,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076409113] [2022-11-23 01:51:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:28,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:28,887 INFO L87 Difference]: Start difference. First operand 2896 states and 3832 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:33,497 INFO L93 Difference]: Finished difference Result 5109 states and 7402 transitions. [2022-11-23 01:51:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:51:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:33,514 INFO L225 Difference]: With dead ends: 5109 [2022-11-23 01:51:33,515 INFO L226 Difference]: Without dead ends: 4158 [2022-11-23 01:51:33,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:51:33,521 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1583 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:33,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 2469 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-23 01:51:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-11-23 01:51:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3509. [2022-11-23 01:51:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2976 states have (on average 1.3713037634408602) internal successors, (4081), 3002 states have internal predecessors, (4081), 291 states have call successors, (291), 192 states have call predecessors, (291), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2022-11-23 01:51:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4793 transitions. [2022-11-23 01:51:34,126 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4793 transitions. Word has length 157 [2022-11-23 01:51:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:34,127 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 4793 transitions. [2022-11-23 01:51:34,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4793 transitions. [2022-11-23 01:51:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:34,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:34,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:34,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 01:51:34,132 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -997468037, now seen corresponding path program 1 times [2022-11-23 01:51:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:34,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629227766] [2022-11-23 01:51:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:34,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629227766] [2022-11-23 01:51:34,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629227766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:34,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862003495] [2022-11-23 01:51:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:34,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:34,365 INFO L87 Difference]: Start difference. First operand 3509 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:38,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:38,917 INFO L93 Difference]: Finished difference Result 7358 states and 10971 transitions. [2022-11-23 01:51:38,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:51:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:38,934 INFO L225 Difference]: With dead ends: 7358 [2022-11-23 01:51:38,935 INFO L226 Difference]: Without dead ends: 5794 [2022-11-23 01:51:38,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:51:38,941 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1682 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2949 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:38,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1708 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2949 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 01:51:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5794 states. [2022-11-23 01:51:39,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5794 to 4736. [2022-11-23 01:51:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 4099 states have (on average 1.4235179312027324) internal successors, (5835), 4129 states have internal predecessors, (5835), 367 states have call successors, (367), 216 states have call predecessors, (367), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2022-11-23 01:51:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 6721 transitions. [2022-11-23 01:51:39,679 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 6721 transitions. Word has length 157 [2022-11-23 01:51:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:39,679 INFO L495 AbstractCegarLoop]: Abstraction has 4736 states and 6721 transitions. [2022-11-23 01:51:39,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:39,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 6721 transitions. [2022-11-23 01:51:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:39,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:39,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 01:51:39,685 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -634001539, now seen corresponding path program 1 times [2022-11-23 01:51:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:39,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718436544] [2022-11-23 01:51:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:39,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:39,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718436544] [2022-11-23 01:51:39,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718436544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:39,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:39,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:39,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909689324] [2022-11-23 01:51:39,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:39,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:39,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:39,906 INFO L87 Difference]: Start difference. First operand 4736 states and 6721 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:45,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:45,150 INFO L93 Difference]: Finished difference Result 11855 states and 18125 transitions. [2022-11-23 01:51:45,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:51:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:45,193 INFO L225 Difference]: With dead ends: 11855 [2022-11-23 01:51:45,193 INFO L226 Difference]: Without dead ends: 9064 [2022-11-23 01:51:45,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:51:45,205 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1575 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:45,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 2469 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3294 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 01:51:45,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9064 states. [2022-11-23 01:51:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9064 to 7195. [2022-11-23 01:51:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4722834645669292) internal successors, (9349), 6388 states have internal predecessors, (9349), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-11-23 01:51:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10601 transitions. [2022-11-23 01:51:46,103 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10601 transitions. Word has length 157 [2022-11-23 01:51:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:46,104 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10601 transitions. [2022-11-23 01:51:46,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10601 transitions. [2022-11-23 01:51:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:46,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:46,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:46,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 01:51:46,111 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash -345182149, now seen corresponding path program 1 times [2022-11-23 01:51:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:46,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831011334] [2022-11-23 01:51:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:46,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:46,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:46,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831011334] [2022-11-23 01:51:46,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831011334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:46,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:46,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891893041] [2022-11-23 01:51:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:46,315 INFO L87 Difference]: Start difference. First operand 7195 states and 10601 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:49,385 INFO L93 Difference]: Finished difference Result 14402 states and 22250 transitions. [2022-11-23 01:51:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:51:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:49,415 INFO L225 Difference]: With dead ends: 14402 [2022-11-23 01:51:49,416 INFO L226 Difference]: Without dead ends: 9152 [2022-11-23 01:51:49,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:51:49,431 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1402 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:49,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 1150 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 01:51:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9152 states. [2022-11-23 01:51:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9152 to 7195. [2022-11-23 01:51:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4696062992125984) internal successors, (9332), 6388 states have internal predecessors, (9332), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-11-23 01:51:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10584 transitions. [2022-11-23 01:51:50,468 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10584 transitions. Word has length 157 [2022-11-23 01:51:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:50,469 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10584 transitions. [2022-11-23 01:51:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10584 transitions. [2022-11-23 01:51:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:50,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:50,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:50,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 01:51:50,476 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -890054723, now seen corresponding path program 1 times [2022-11-23 01:51:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:50,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047248952] [2022-11-23 01:51:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:50,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047248952] [2022-11-23 01:51:50,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047248952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:50,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:50,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:50,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63485323] [2022-11-23 01:51:50,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:50,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:50,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:50,685 INFO L87 Difference]: Start difference. First operand 7195 states and 10584 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:54,283 INFO L93 Difference]: Finished difference Result 14367 states and 22130 transitions. [2022-11-23 01:51:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:51:54,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:51:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:54,311 INFO L225 Difference]: With dead ends: 14367 [2022-11-23 01:51:54,311 INFO L226 Difference]: Without dead ends: 9117 [2022-11-23 01:51:54,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:51:54,325 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1204 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:54,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1379 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 01:51:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9117 states. [2022-11-23 01:51:55,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9117 to 7195. [2022-11-23 01:51:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 6350 states have (on average 1.4669291338582677) internal successors, (9315), 6388 states have internal predecessors, (9315), 519 states have call successors, (519), 264 states have call predecessors, (519), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-11-23 01:51:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10567 transitions. [2022-11-23 01:51:55,219 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10567 transitions. Word has length 157 [2022-11-23 01:51:55,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:55,219 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 10567 transitions. [2022-11-23 01:51:55,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:51:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10567 transitions. [2022-11-23 01:51:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:51:55,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:55,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:51:55,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 01:51:55,226 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1838106689, now seen corresponding path program 1 times [2022-11-23 01:51:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:55,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211353073] [2022-11-23 01:51:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:55,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:51:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:51:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:51:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:51:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:51:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:55,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211353073] [2022-11-23 01:51:55,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211353073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:55,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:55,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:51:55,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740475791] [2022-11-23 01:51:55,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:55,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:51:55,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:55,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:51:55,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:51:55,459 INFO L87 Difference]: Start difference. First operand 7195 states and 10567 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:01,798 INFO L93 Difference]: Finished difference Result 20795 states and 32221 transitions. [2022-11-23 01:52:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:52:01,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:52:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:01,849 INFO L225 Difference]: With dead ends: 20795 [2022-11-23 01:52:01,850 INFO L226 Difference]: Without dead ends: 15545 [2022-11-23 01:52:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:52:01,865 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1562 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:01,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 2469 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 01:52:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15545 states. [2022-11-23 01:52:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15545 to 12176. [2022-11-23 01:52:03,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.5023362345396243) internal successors, (16398), 10969 states have internal predecessors, (16398), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-11-23 01:52:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18436 transitions. [2022-11-23 01:52:03,572 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18436 transitions. Word has length 157 [2022-11-23 01:52:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:03,573 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 18436 transitions. [2022-11-23 01:52:03,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18436 transitions. [2022-11-23 01:52:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:52:03,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:03,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:03,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 01:52:03,581 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1872088957, now seen corresponding path program 1 times [2022-11-23 01:52:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:03,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597045967] [2022-11-23 01:52:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:52:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:52:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:52:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:52:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:03,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:03,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597045967] [2022-11-23 01:52:03,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597045967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:03,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:03,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:52:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775733529] [2022-11-23 01:52:03,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:03,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:52:03,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:52:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:52:03,799 INFO L87 Difference]: Start difference. First operand 12176 states and 18436 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:08,519 INFO L93 Difference]: Finished difference Result 25941 states and 40627 transitions. [2022-11-23 01:52:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 01:52:08,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:52:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:08,567 INFO L225 Difference]: With dead ends: 25941 [2022-11-23 01:52:08,567 INFO L226 Difference]: Without dead ends: 15710 [2022-11-23 01:52:08,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:52:08,591 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1203 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:08,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1379 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 01:52:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15710 states. [2022-11-23 01:52:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15710 to 12176. [2022-11-23 01:52:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 10915 states have (on average 1.4993128721942282) internal successors, (16365), 10969 states have internal predecessors, (16365), 823 states have call successors, (823), 360 states have call predecessors, (823), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-11-23 01:52:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 18403 transitions. [2022-11-23 01:52:10,260 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 18403 transitions. Word has length 157 [2022-11-23 01:52:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:10,260 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 18403 transitions. [2022-11-23 01:52:10,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 18403 transitions. [2022-11-23 01:52:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:52:10,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:10,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:10,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 01:52:10,265 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:10,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1437583359, now seen corresponding path program 1 times [2022-11-23 01:52:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:10,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534977569] [2022-11-23 01:52:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:52:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:52:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:52:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:52:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:10,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534977569] [2022-11-23 01:52:10,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534977569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:10,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:10,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:52:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036931544] [2022-11-23 01:52:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:52:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:52:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:52:10,509 INFO L87 Difference]: Start difference. First operand 12176 states and 18403 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:19,175 INFO L93 Difference]: Finished difference Result 38750 states and 60730 transitions. [2022-11-23 01:52:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 01:52:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:52:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:19,261 INFO L225 Difference]: With dead ends: 38750 [2022-11-23 01:52:19,262 INFO L226 Difference]: Without dead ends: 28519 [2022-11-23 01:52:19,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-23 01:52:19,293 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1554 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:19,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2469 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 01:52:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28519 states. [2022-11-23 01:52:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28519 to 22196. [2022-11-23 01:52:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22196 states, 20103 states have (on average 1.5205193254738099) internal successors, (30567), 20189 states have internal predecessors, (30567), 1431 states have call successors, (1431), 552 states have call predecessors, (1431), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2022-11-23 01:52:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22196 states to 22196 states and 34339 transitions. [2022-11-23 01:52:22,608 INFO L78 Accepts]: Start accepts. Automaton has 22196 states and 34339 transitions. Word has length 157 [2022-11-23 01:52:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:22,609 INFO L495 AbstractCegarLoop]: Abstraction has 22196 states and 34339 transitions. [2022-11-23 01:52:22,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 22196 states and 34339 transitions. [2022-11-23 01:52:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:52:22,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:22,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 01:52:22,621 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1007925053, now seen corresponding path program 1 times [2022-11-23 01:52:22,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:22,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112712782] [2022-11-23 01:52:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:52:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:52:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:52:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:52:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:22,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:22,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112712782] [2022-11-23 01:52:22,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112712782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:22,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:22,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:52:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954982799] [2022-11-23 01:52:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:52:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:52:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:52:22,859 INFO L87 Difference]: Start difference. First operand 22196 states and 34339 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:40,997 INFO L93 Difference]: Finished difference Result 84260 states and 133206 transitions. [2022-11-23 01:52:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:52:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-11-23 01:52:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:41,194 INFO L225 Difference]: With dead ends: 84260 [2022-11-23 01:52:41,194 INFO L226 Difference]: Without dead ends: 64009 [2022-11-23 01:52:41,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:52:41,254 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1746 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:41,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1704 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 01:52:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64009 states. [2022-11-23 01:52:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64009 to 42105. [2022-11-23 01:52:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42105 states, 38412 states have (on average 1.534234093512444) internal successors, (58933), 38562 states have internal predecessors, (58933), 2583 states have call successors, (2583), 936 states have call predecessors, (2583), 1108 states have return successors, (5015), 2734 states have call predecessors, (5015), 2580 states have call successors, (5015) [2022-11-23 01:52:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42105 states to 42105 states and 66531 transitions. [2022-11-23 01:52:49,299 INFO L78 Accepts]: Start accepts. Automaton has 42105 states and 66531 transitions. Word has length 157 [2022-11-23 01:52:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:49,300 INFO L495 AbstractCegarLoop]: Abstraction has 42105 states and 66531 transitions. [2022-11-23 01:52:49,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 01:52:49,300 INFO L276 IsEmpty]: Start isEmpty. Operand 42105 states and 66531 transitions. [2022-11-23 01:52:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 01:52:49,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:49,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:49,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 01:52:49,316 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash 301328447, now seen corresponding path program 1 times [2022-11-23 01:52:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375898294] [2022-11-23 01:52:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:52:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-23 01:52:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-23 01:52:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 01:52:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-23 01:52:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:49,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:49,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375898294] [2022-11-23 01:52:49,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375898294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:49,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:49,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 01:52:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580833488] [2022-11-23 01:52:49,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:52:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:52:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:52:49,751 INFO L87 Difference]: Start difference. First operand 42105 states and 66531 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)